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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Letter from Clayton Dewandre to the Experimental Department regarding the pressure drop for performance comparisons.

Identifier  ExFiles\Box 150\2\  scan0074
Date  6th July 1938
  
Handwritten top: File Radiators General

REGISTERED OFFICE:
TITANIC WORKS, LINCOLN.
TELEPHONE: LINCOLN 1156/7.
TELEGRAMS: TITANIC, LINCOLN.

LONDON OFFICE:
AFRICA HOUSE, KINGSWAY, W.C.2.
TELEPHONE: HOLBORN 4614
TELEGRAMS: CLADEWCO WESTCENT, LONDON.

CODES USED:
A.B.C. 6TH EDITION 5 LETTER.
BENTLEY'S AND PRIVATE.

CLAYTON DEWANDRE COMPANY LIMITED.

(FBI Logo)

DIRECTORS:
C. H. {Arthur M. Hanbury - Head Complaints} DADE, (CHAIRMAN).
C. T. BLACKLOCK, (MANAGING DIRECTOR).
R. {Sir Henry Royce} M. {Mr Moon / Mr Moore} GRANT.

GENERAL MANAGERS:
J. {Mr Johnson W.M.} E. {Mr Elliott - Chief Engineer} GRIMSHAW. S. E. {Mr Elliott - Chief Engineer} WILLETT.

REF. SEW/SMB

TITANIC WORKS,
LINCOLN,
ENG.

6th July 1938.

Messrs Rolls Royce Limited,
Experimental Department,
DERBY.

Handwritten: 1280 WMRy/SM

Dear Sirs,

We are in receipt of your letter of the 4th instant, reference Rm {William Robotham - Chief Engineer} /Std.5/MH. {M. Huckerby}

We have pleasure in advising you that we are in general agreement with your remarks except that the pressure drop used should be the sum of the matrix and bonnet resistances in making a comparison of performances.

Yours faithfully,
CLAYTON DEWANDRE CO. LTD.

(Signature of S. E. {Mr Elliott - Chief Engineer} Willett)

(S. E. {Mr Elliott - Chief Engineer} WILLETT)
JOINT GENERAL MANAGER
  
  


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